const int ldrPin = A0;     // LDR analog pin
const int relayPin = 7;    // Rele IN pin
int threshold = 500;       // Chegara qiymati
int ldrValue;

void setup() {
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW); // Dastlab chiroq o‘chirilgan
  Serial.begin(9600);
}

void loop() {
  ldrValue = analogRead(ldrPin);  // LDR qiymatini o‘qish
  Serial.print("LDR: ");
  Serial.println(ldrValue);

  if (ldrValue >= threshold) {
    digitalWrite(relayPin, HIGH); // Chiroq yoqiladi
  } else {
    digitalWrite(relayPin, LOW);  // Chiroq o‘chadi
  }

  delay(500); // Yengil kechikish
}